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04/21/2004 03:39:40 PM · #1 |
Hi,
This is a part of an image I took a few days ago with my Canon G5 and a Canon SpeedLite 420EX:
The camera was set to flash on the second curtain. As you can see, the flash went off at about 2/3 of the exposure time (which was 1/60s, btw), rather than at the end.
I don't think that this has anything to do with the fact that the flash was only used to fill in (and to freeze the movement, obviously). So I am wondering if that is as good as this type of camera gets here, or if I might be doing something wrong.
Regards,
Robert |
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04/21/2004 03:53:23 PM · #2 |
As you have discovered, 2nd curtain flash is NOT really at the very last moment of exposure. Rather, it is at the last moment BEFORE the shutter curtain begins to close. Exposure continues as the curtain travels across the sensor.
Similarly, first curtain flash is not actually at the beginning of the exposure, it occurs at the first moment the shutter curtain is completely open.
Any camera will give similar results.
Message edited by author 2004-04-21 15:55:36.
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04/21/2004 04:07:20 PM · #3 |
It would, largely, depend on the type of effect you intend.
Considering the low contrast and the given aperture for this image, this is not necessarily a poor result. A larger aperture would, of course, blur the background providing the illusion of greater contrast. A uniformly darker background, as in a night shot, would make for a great contrast as well.
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04/22/2004 10:30:13 AM · #4 |
Thanks for your replies. I gues I underestimated the time it takes for the shutter to close (because in theory, I understand when the second curtain flash goes off ...). I wonder if setting the flash to hi-speed sync would change that ... I'll have to try that out.
And yes, I know the image isn't very good (that's why I only posted a part of it ;), but it was just some people playing with balls, nothing fancy. I didn't want the flash to be dominant (it was set to -1), but only to add a frozen part of the image. All in all, the images turned out quite ok.
Regards,
Robert |
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